If you don't do anything drastic to the blade it should last several lifetimes. I think you will probably have to send it for honing as well, in which case you may be better off buying it from theinvisibleedge (i think he also sells dovos). You'll get much better deal in the classifieds unless you really need to have brand new razor (note that once it's honed it's not really brand new anymore).
good luck